阅读理解 Weighing too much can damage your health, and obesity is a growin

题文

阅读理解  Weighing too much can damage your health, and obesity is a growing problem for both kids and adults around the world. Sleep might be one answer to the problem.A new study has found that elementary school students who slept too little were more likely to gain pounds.In the United States today, some 9 million children over the age of 6 are obe (too fat). Past studies have shown a link between sleeping less and weighing more, but scientists have had a tough time determining"which_came_first, the_chicken_or_the_egg", says Julie C. Lumeng of the University of Michigan in Ann Arbor.In other words, it hasn't been clear whether kids who weigh too much have trouble sleeping, or whether sleeping less leads to weight gain.Both scenarios (情况) emed equally possible.  To get a better idea of which caus which, Lumeng and his colleagues interviewed the parents of 785 third graders from around the United States.The parents answered questions about how well their kids slept that year.Three years later, the parents answered the same questions.By sixth grade,18 percent of kids involved in the study were obe.The scientists found no relationship between weight and the students'race or gender.It also didn't matter how strict their parents were.Obesity struck all of the groups equally. Instead, sleep emed to be the key factor.Over the 3 years of the study, the children averaged a healthy 9.5 hours of sleep a night.Some kids, however, slept a lot more-or less-than others.For the sixth graders, every hour of sleep above the 9.5hour average was linked to a 20 percent lower risk of being obe.Sleep appeared doubly important for the third graders.Every extra hour of sleep they got was linked to a 40 percent drop in obesity by third grade. "I expected we'd find that this (sleep link with obesity) was just a_bunch_of_bunk, " says Lumeng, a pediatrician.But their findings were convincing.No matter how her team looked at the link, "we couldn't make it go away." 1. According to the rearch, ________. A. 9 million people in America have a weight problemB. not enough sleep contributes to a gain in weightC. sixth graders need more sleep than third gradersD. lack of sleep has become the most deadly killer 2. The statement "which came first, the chicken or the egg" suggests that________. A. scientists are sure about the caus of children's obesityB. it's easy to decide the cau and effect of this problemC. scientists are still confud about the cau and effect of the problemD. you'll develop obesity if you eat chicken and eggs 3. Recent studies show that a child's weight is influenced by the________. A. amount of sleep  B. parents'attitude to himC. race or gender  D. performance in school 4. The underlined part in the last paragraph most probably means something________. A. acceptable  B. understandableC. reliable  D. unreasonable 题型：未知难度：其他题型

答案

1-4: BCAD

解析

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考点

据考高分专家说，试题“阅读理解 Weigh.....”主要考查你对 [健康环保类阅读 ]考点的理解。 健康环保类阅读

健康环保累阅读概念：

健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。体裁有记叙文、 说明文、议论文和各种应用文。

健康环保类文章阅读技巧：

   健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考，理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文，从结构上看大致可分为三个部分：   第一部分一般是文章的首段，主要用来提出文章的主题，即文章想要阐述、说明的主要内容；   第二部分是文章的主体，可由若干个段落组成，对文章的主题进行展开说明；   第三部分是结尾段，对文章的主题进行归纳总结。这类文章多用一般现在时，而且一般多使用客观性词语表述。有时为了强调客观性，也常使用被动语态。   从近几年的考试题来看，科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节，很多同学对此类文章感到费解。但一般的科普类文章都是就事论事，需要逻辑推理和想象的时候较少，因此此类阅读题也没有同学们想象中的那么难，只要多加训练，就能较好地答题。【阅读策略】 1、概要(Summarizing)：  阅完材料后，将所阅材料浓缩，摘要，做出所阅材料的书面或口头梗概。 2、组织(Organization)：  阅读后根据阅读内容，识别观点、人物、事件之间的关系以及文章的结构关系。如：时间关系、比较或对比关系、相关关系及因果关系等。